Plasmid DNA damage by heavy ions at spread-out Bragg peak energies H. M. Dang, M. J. van Goethem, E. R. van der Graaf, S. Brandenburg, R. Hoekstra and T. Schlathölter Eur. Phys. J. D, 60 1 (2010) 51-58 Published online: 30 March 2010 DOI: 10.1140/epjd/e2010-00080-1